Extjs4 Treegrid 使用心得分享(經(jīng)驗(yàn)篇)

更新時間：2013年07月01日 17:31:04 投稿：whsnow

最近調(diào)試EXTJS 4的treegrid實(shí)例，看了很多水友的文章，以及官方的demo，沒一個可靠的，于是乎自己折騰中...感興趣的朋友可以了解下本文或許對你有所幫助

使用treegrid，需要在調(diào)用頁面的head中加載以下幾個文件：

<link rel="stylesheet" type="text/css" href="css/ext-all.css">
<script type="text/javascript" src="ext-all.js"></script>
<script type="text/javascript" src="treegrid.js"></script>

然后在頁面的body中寫上一個div

復(fù)制代碼代碼如下:

記得把json數(shù)據(jù)文件和css文件等拷貝到調(diào)用目錄下。
完成的treegrid.js代碼為：

復(fù)制代碼代碼如下:

/*
This file is part of Ext JS 4
Copyright (c) 2011 Sencha Inc
Contact: http://www.sencha.com/contact
GNU General Public License Usage
This file may be used under the terms of the GNU General Public License version 3.0 as published by the Free Software Foundation and appearing in the file LICENSE included in the packaging of this file. Please review the following information to ensure the GNU General Public License version 3.0 requirements will be met: http://www.gnu.org/copyleft/gpl.html.
If you are unsure which license is appropriate for your use, please contact the sales department at http://www.sencha.com/contact.
*/
Ext.require([
'Ext.data.*',
'Ext.grid.*',
'Ext.tree.*'
]);
Ext.onReady(function() {
//we want to setup a model and store instead of using dataUrl
Ext.define('Task', {
extend: 'Ext.data.Model',
fields: [
{name: 'task', type: 'string'},
{name: 'user', type: 'string'},
{name: 'duration', type: 'string'}
]
});
var store = Ext.create('Ext.data.TreeStore', {
model: 'Task',
proxy: {
type: 'ajax',
//the store will get the content from the .json file
url: 'treegrid.json'
},
folderSort: true
});
//Ext.ux.tree.TreeGrid is no longer a Ux. You can simply use a tree.TreePanel
var tree = Ext.create('Ext.tree.Panel', {
title: 'Core Team Projects',
width: 500,
height: 300,
collapsible: true,
useArrows: true,
rootVisible: false,
store: store,
multiSelect: true,
singleExpand: true,
//the 'columns' property is now 'headers'
columns: [{
xtype: 'treecolumn', //this is so we know which column will show the tree
text: 'Task',
flex: 2,
sortable: true,
dataIndex: 'task'
},{
//we must use the templateheader component so we can use a custom tpl
xtype: 'templatecolumn',
text: 'Duration',
flex: 1,
sortable: true,
dataIndex: 'duration',
align: 'center',
//add in the custom tpl for the rows
tpl: Ext.create('Ext.XTemplate', '{duration:this.formatHours}', {
formatHours: function(v) {
if (v < 1) {
return Math.round(v * 60) + ' mins';
} else if (Math.floor(v) !== v) {
var min = v - Math.floor(v);
return Math.floor(v) + 'h ' + Math.round(min * 60) + 'm';
} else {
return v + ' hour' + (v === 1 ? '' : 's');
}
}
})
},{
text: 'Assigned To',
flex: 1,
dataIndex: 'user',
sortable: true
}]
});
});